Variable height workstation and system

Details Variable height workstation and system Variable height workstation and system

1989-08-29

1990-05-08

Kashnikow, Andres

Railways

Elevators

104128, 104129, B61B 300

Patent

active

049228293

ABSTRACT:
A variable height workstation includes a trolley delivery apparatus for moving a rail section from a gap formed in a subsidiary loop rail to a workstation located remotely from the loop. A pivotal cam moves with the rail section and arrests travel of a trolley on the movable rail section so that rail section may be moved toward the workstation while carrying the trolley. As the rail section moves upwardly toward the gap formed in the subsidiary loop, the cam rotates and accelerates the trolley off the rail section. The trolley delivery apparatus is employed in a subsidiary loop system whereby a first escapement device is located upstream of it to advance selected one of the diverted trolleys onto the moveable rail section. The pivotal cam associated with the moveable rail section in turn advances the involved trolley off the rail section downwardly on a downstream rail portion toward a second escapement device whereupon trolleys may again collect and are subsequently advanced at intervals onto a transfer slide for carriage into an elevator upwards toward the main rail of the system.

REFERENCES:
patent: 2075209 (1937-03-01), Kuebler
patent: 2511316 (1950-06-01), Cody
patent: 2956514 (1960-10-01), Bishop
patent: 3055311 (1962-09-01), Sgriccia et al.
patent: 4019605 (1977-04-01), Kropf
patent: 4706782 (1987-11-01), Spoeler et al.

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